FFWEB-3343: Fix GitHub actions cache

Author: Rayn93

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
         run: echo "::set-output name=dir::$(composer config cache-files-dir)"
 
       - name: Load Composer cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-${{ matrix.php }}-${{ matrix.deps }}-composer